from machine import Pin
import time
def readpin():
    p1 = Pin(1, Pin.IN)
    p4 = Pin(4, Pin.IN)
    print(p1.value(),p4.value())
    time.sleep(0.1)
    s1=p1.value()
    s2=p4.value()
    if s1==1 and s2==0:
        print("youzhuan")
    elif s2==1 and s1==0:
        print("zuozhuan")
while True:
    readpin()
    